Electrical power supply plug



FIG. 1 is a side elevational view of an electrical power supply plug showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a side elevational view thereof as seen from the opposite side of FIG. 1;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a top, front and side perspective view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a top, rear and side perspective view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a bottom, front and side perspective view thereof. 

The ornamental design for an electrical power supply plug, as shown and described. 